diff --git a/cmd/gopngquant/Makefile.cygwin b/cmd/gopngquant/Makefile.cygwin
deleted file mode 100644
index af174af..0000000
--- a/cmd/gopngquant/Makefile.cygwin
+++ /dev/null
@@ -1,10 +0,0 @@
-
-.PHONY: all clean
-
-all: gopngquant.exe
-
-clean:
-	rm ./gopngquant.exe || true
-	
-gopngquant.exe: main.go
-	( source ~/.cygwin-toolchain-switcher/use-toolchain-x86_64-w64-mingw32.sh && go build -a -ldflags '-s -w' )